Experimental investigation on the energy Absorption characteristic of braided composite circular tubes subjected to quasi-static axial compression;
编织复合材料圆管准静态轴向压缩吸能特性的试验研究
Simple analysis on crack of axial compression of some prestressed concrete;
某预应力混凝土轴向压缩裂缝浅析
This paper presents a theoretical analysis about the propagation rule of the micro-crack in brittle materials under axial compression,based on the energy release rate criterion.
本文利用混合型裂纹扩展的能量释放率理论对脆性材料受轴向压缩时其内部微观裂纹的扩展规律进行了研究。
The principle and performance of turnaround fracture tech have been introduced and by analyzing repeat fracture turnaround theory, stress differences between natural and induced turnaround fracture is achieved.
阐述了转向压裂技术原理,介绍了转向剂的性能,分析了重复压裂转向理论,得出了自然转向和诱导转向的应力差值;在转向压裂工艺优化的基础上,开展了两口井现场试验,取得了很好的应用效果;提出了转向压裂技术是江苏油田低渗透油藏高含水期一种新的重复压裂技术。
This paper discussed the principle,performance and mechanism of the turnaround fracture tech.
阐述了转向压裂技术原理,介绍了转向剂的性能,分析了重复压裂裂缝转向机理,给出了转向压裂井层优选原则及转向压裂工艺设计;最后在转向压裂工艺优化的基础上,进行了21口井的现场应用,并取得了很好的应用效果;提出了转向压裂技术是文东油田高压低渗透油藏高含水期一种新的重复压裂技术。
, in the course of repeat fracture, turnaround fracture can make new fracture to increase efficiently productivity.
转向压裂通过采用桥堵剂等措施,在重复压裂改造过程中形成新的裂缝实现高效增产。
Plastic deformation and strengthened phenomenon of some areas of circular saw exerted axial pressure on;
圆锯片局部受轴向压力作用下的塑性变形及强化
Experimental research on wave velocity under axial pressure;
轴向压力下砂岩波速的实验研究
This paper carried out the analysis and testing of axial pressure distribution of V seal in theoretically and experimentally,and explored two problems in the failure and the ring number of V seal through distribution curves of the axial pressure.
文章对压裂泵液力端V形密封轴向压力分布从理论和试验两方面进行分析和测试,并由轴向压力分布曲线探讨了V形密封失效和圈数确定的问题。
In view of potential leakage from powder compaction during carbide production,a new unit is developed matched to 2-way press.
针对硬质合金生产过程中粉末压制时容易泄漏的特点,研制出一种与双向压机相匹配的装置。